Apparatus for the continuous automatic discharge of mud from steam boilers and heaters of liquids



Aug. 26, 1930. c. PICCARDO' 1,774,211 APPARATUS FOR THE CONTINUOUS AUTOMATIC DISCHARGE OF MUD FROM STEAK BOILERS AND HEATERS OF LIQUIDS Filed Aug. 21. 1,928 2 Sheets-Sheet 1 C P/ccl r020 Aug. 26, 1930. PICCARDO 1,774,211 APPARATUS FOR THE CONTINUOUS AUTOMATIC DISCHARGE OF MUD FROM STEAM BOILERS AND HEATERS OF LIQUIDS Fileci Aug. 21, 1928 2 Sheets-Sheet 2 veNTok Patented Aug. 26, 1930 UNITED STATES PATENT orl-"rcs CESARE IBI GCABI DO, OF GENOA, ITALY arrnrmrus FOR 'rnn "con'rmuous AUTOMATIC mscnanen or MUD mom s'rnam a 1 :Bomnns am) HEATERS or LIQUIDS Application flledAugust 21, 1928, Serial No.

1, The invention refers to an apparatus for the continuous and automatic discharge of mud from steam boilers in which it is essen-' tial that a mud separator is thus connected with the water space of the boiler by means of circulating conduits'supplied with auto- 'matic valves in which the'circulation takes that these valves by the simple opening an place by the difierence of temperature, so

closing of the'discharge cock of the separator are automatically placed in the open or closed position. 0

The discharge of water from the/ boiler takes place in a zone. of the highest concentration of mud while the connection with the boiler for the return branch takes place in a zone in which the water is not intensively heated. The circulation of the water between the boiler and the separator takes place owing'tothe difference of tempe ature in the-mannerthat a; part of, the co duit is conveniently cooled.

' The particular construction 'of the separa tor also constitutes a invention. I o

The invention is illustrated in a form of execution in the drawing and 1' Figures 1 .and 2 show the device in connection with a tube boiler and with a flue boiler respectively. Figure 3 is a detail ofthe mud separator. In these .figu'res, 1 is the boiler, 2 is the mud further object separator so arranged with reference to the I .to be situated below the water level.

boiler as In the conduits leading from theconnections 3 and 4; .on the boiler to the separator' are ar-'v ranged non-return: valves 5 and 6. The con- 1 duits between the boiler and the separator.- are insulated with the exception of such a.

piece ofthe conduit so as to produce, on account of the obtained difierence of temperaa ture,lthe required circulation.

-In the 111115? trated form of execution the noninsulated conduit'is the vertical piping arranged to the right of the separator, as shown in 'Figs.- 1 and 2." This piping may eventually be supplied with ribs or increase its cooling surface. 7 and Sareair discharge and testing cocksmnd Sis the idisof the group 20 upon the letely opened on account liquid in. the cup shaped as a coilso as to 301,036, and in Germany February 13, 1928.

charge cock of the separator. '10 and 11 are In the cylindrical receptacle 2 is axially secured upon the cover 12 the tubular piece 13 d which coaxially encloses an inner tubular piece 14; the latter connects in the interior of the receptacle 2 with the descending tube 15 and towards the top is connected with a cup 16 in which is stored a chemical reagent or a scale disincrustant solvent. Theconduit admitting the boiler water to the separator is connected with the tubular piece 14, the

conduit discharging the boiler water from 'the separator is connected with the tubular ,piece 13. 17 is a regulating cock for the ad- 'mission of the chemicalreagent within the separator and 18 is a threaded plug with handlever in order to fill the cup 16 with said reagent or scale solvent. Uponthe descending pipe 15 are arranged two groups of superpos'ed frustums of cones 19 and 20, of which the inner group 19 is immediately fastened upon the descending tube and the outer tangernent between an inner and an 0 er cone is produced an annular coaxial passage. 21 and 22' are two threaded. shafts whlch inner group. .By this r-- carry hand wheels and which can beadjusted r against the valves 5 and,6 so as to open the v valve passages. 23 indicates a cock provided on the-cup 16- 'for the discharge and the control of the contents of this cup.

The deviceworks as follows Themuddy boiler water circulates in the direction of the arrows. The. speed of this circulation is not suflicient to close the two non-return'valves fraud 6 of their weights. he speed of the circulat' on can be regulated whichremain com- I by ad usting the valves 3 and 4 as well-as the I size of the ribbed cooling surface. The water entering the due, to the difference in density and temperature. The adjhstrnent of the cock 17 establishes the time in whlch the contents of the cup 16 must be dlsplaced by 111stubular piece 14'rises above the 55 a as the valves and 6 by displacing the valve the boiler water, that is to say in which same ascent a zig zagpath and traverses in this deviation .(see arrows) way the annular grooves between the two groups of frustums of cones, the mud during this passage, on account of the successive etting separated by the centrifugal force,- roin the water and flowing on account of its inertia across the quietzones in the intervals between the outer frustums of cones within the annular space 4 along the shell of the separator. From this towards the outside by as caused b annular space the'mud is easily collected at the bottom of the receptacle on account of the'descending motion of the water cooled by the contact with the shell, the descending water along the shell favoring the attraction of the mud from the quiet zones between the frustums of cones.

The water thus liberated from the mud returns to theboiler. From time to time the mudv collected in the se arator is conducted the discharge cock 9.

In 0 enin this cock during the Working of the evice. is immediately produced by the decreased pressure in the separator 2 an increased speed in one circulating pipe which displaces the non-return valve 5 and an increased speed of the reversed flow in the other circulating pipe to displace the non-return valve 6 closing both of them so that thedischarge of the separator is not influenced by the pressure of the boiler. discharge cock 9 is again. closed pressure is again produced in the separator, this through the imperfect tightness of the valves 5 and 6 a slight out made in the valve or by an insu cient grinding. If this pressure has again reachcd the value of the pressure of the boiler the non-return valves are again in equilibrium and open again by their own wei ht, so that the normal circulation is again esta lished. For washing out the separator the discharge cock 9 will be opened as well rods 21 and 22. i

It is obvious that the device can just as well be adapted for liquid heaters of various types.

Having now particularly describedand ascertained the nature of my said invention and in what manner the sameis' to be performed, I declare that what I claim is Apparatus for the continuous discharge As soon as the separator.

of mud from steam boilers and heaters of liquid comprising. a boiler, a separator including a discharge cock, connections between the boiler and the separator, means for regulating the speed of-the circulating water across the separator and valves arranged on the pipe connections between the boiler and the separator, which are automatically brought to the open or closed position by closing or opening the discharge cock of the separator so as to allow the discharge of the separator at the outside pressure.

2. Apparatus of the type specified comprisinga boiler, a separator including a discharge cock, connections between the boiler and the separator, means for regulating the speed of the circulating water,fnon-return valves arranged on the connections between the boiler and the separator which close from the bottom, and present a piping which connects from the bottom so as to eliminate spaces in the valve body for the collection of mud and to obtain that the valve opening takes place by its own weight, the non-return valves beingbrought to the open or closed position by closing or opening the discharge cock of the separator.

3. Apparatus of the type specified comprising a boiler, a separator, connections between the boiler and the separator, the separator 'including a receptacle, a discharge cock at the bottom thereof, a descending central pipe and two coaxial groups of frustums of cones within the receptacle and alternately arranged with respect to each other so as to provide an annular zigzag like passage for the ascension of muddy water in the central part of the receptacle and the separation of the mud from the water, non-return valves arranged on the connections between the boiler and the separator,'and adapted to be moved to the open orclosed position by closing or opening the discharge cock of the 4. Apparatus of the type specified comprising a boiler, a separator, connections between the boiler and the separator, the separator including a receptacle, a. discharge cock atthe bottom'of the receptacle, a descending central pipe, two coaxial groups of frustums of cones Within the receptacle and alternately arranged with respect to eachbe brought to the open or closed position by closing or opening the discharge cock of the separator, inspection glasses arranged on the connecting pipes between the boiler and separator and a chemical scale disincrustant solvent storing cup arranged above and in connection with the separator.

5. In a hot water piping of a heater of liquid, a mud separator comprising a receptacle, a discharge cock at the bottom thereof, a descending central pipe and two coaxial groups of frustums of cones within the recepta'cle and alternatively arranged with respect to each other so as to provide an annular zigzag passage for the ascension of muddy water in the central part of the receptacle, further large intervals between the frustums of cones of the outer group for the separation of the mud and an annular space between the outer edges of the outer group of frustums ofcones and the shell of thereceptacle for thecollection and the deposition of the mud.

6. Apparatus of the typespecified comprising a boiler, a separator, connections between the boiler and the separator, the separator including a receptacle, a discharge cock at the bottom thereof, a descending central pipe and two coaxial groups of frustums of cones withint-he receptacle and alternatively arranged with respect to each other so as to provide an annular, zigzag like passage for the ascension of muddy Water in the central part of the receptacle, and further large intervals between the 'frustrums'of cones of the outer group for t the separation of the mud and an annular space between the outer edges of the outer group of frustums of cones and the shell of the receptacle for the collection and the deposition of the mud, non-return valves arranged on the connections between the boiler and the separator, and adapted to be moved to the. open or closed position by closing or opening the discharge cock of the separator. I 7. Apparatus of the type" specified comprising a boiler, a separator, connections between the boiler and the separator, the'separator including a receptacle, a discharge cock at thebottom of the receptacle, a de-' scending central pipe, twocoaxial groups of frustumsof cones within the receptacle and alternately arranged with respect to each other so as to provide an annular zigzag like passage for the ascension of the muddy water in the central part of the receptacle and further intervals between'the frustums of cones of the outer group for the separation of the mud and an annular space between the outer non-return valves arranged on the connecedges of the outer groups of frustums ofv cones and the shell of the receptacle for the collection and the deposition, (decantation) of the mud, means for regulating the speed of the circulating water across the separator,

tions between the boiler and the separator and adapted to be brought to the open or closed position by closing or opening the discharge cock of the separator, inspection glasses arranged on the connecting pipes be tween the boiler and separator, and a. chemgroup of rather short frustums of cones tightly fitted and arranged coaxially to the descending tube, an outer group of frustums of cones also coaxially arranged with respect to the descending tube but having their inner edges spaced apart from this tube and each projecting between the outer edges of the corresponding pair of inner cones and extending with their outer and base edges a short distance apart from the shell of the receptacle, the two groups of frustums of cones forming between them an annular zigzag like passage for the ascension of the muddy water in the proximity of the descending tube formed; and a valve controlled discharge of clean hot waterfrom the separator arranged in communicatio'n'with said zigzag passage.

In testimony whereof I have signed my name to this specification.

CESARE PICCARDO, 

